tofsee | d603d68330bbeafc83eee0776c42cd3060edd9431b98b504c889ef70535e8854

General

Target

a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe
Size

10.0MB
MD5

a2f26ac6d777b4fe2c91e979c4fa9aa8
SHA1

7563de6150b7c7743757bb0a90afb9f2c7627d8b
SHA256

d603d68330bbeafc83eee0776c42cd3060edd9431b98b504c889ef70535e8854
SHA512

d66f5dc3ba39303ca7ad4694c25b81e5e282bca18ae0e5e4f09a37a481b0e38d130626ca59041b2fe4660d28b4cd10959cfc0a0ec1eb85688d0d91c581846395
SSDEEP

49152:Muuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu3:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3152	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\kdpqbbkx\ImagePath = "C:\\Windows\\SysWOW64\\kdpqbbkx\\iajrobnh.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3200	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1828	iajrobnh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1828 set thread context of 3200	1828	iajrobnh.exe	112

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
4420	sc.exe
2408	sc.exe
1972	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1532	3716	WerFault.exe	82
3604	1828	WerFault.exe	100

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iajrobnh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3716 wrote to memory of 804	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	83
PID 3716 wrote to memory of 804	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	83
PID 3716 wrote to memory of 804	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	83
PID 3716 wrote to memory of 1696	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	86
PID 3716 wrote to memory of 1696	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	86
PID 3716 wrote to memory of 1696	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	86
PID 3716 wrote to memory of 4420	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	90
PID 3716 wrote to memory of 4420	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	90
PID 3716 wrote to memory of 4420	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	90
PID 3716 wrote to memory of 2408	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	92
PID 3716 wrote to memory of 2408	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	92
PID 3716 wrote to memory of 2408	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	92
PID 3716 wrote to memory of 1972	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	98
PID 3716 wrote to memory of 1972	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	98
PID 3716 wrote to memory of 1972	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	98
PID 3716 wrote to memory of 3152	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	101
PID 3716 wrote to memory of 3152	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	101
PID 3716 wrote to memory of 3152	3716	a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe	101
PID 1828 wrote to memory of 3200	1828	iajrobnh.exe	112
PID 1828 wrote to memory of 3200	1828	iajrobnh.exe	112
PID 1828 wrote to memory of 3200	1828	iajrobnh.exe	112
PID 1828 wrote to memory of 3200	1828	iajrobnh.exe	112
PID 1828 wrote to memory of 3200	1828	iajrobnh.exe	112

C:\Users\Admin\AppData\Local\Temp\a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3716
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kdpqbbkx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:804
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iajrobnh.exe" C:\Windows\SysWOW64\kdpqbbkx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1696
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kdpqbbkx binPath= "C:\Windows\SysWOW64\kdpqbbkx\iajrobnh.exe /d\"C:\Users\Admin\AppData\Local\Temp\a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4420
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kdpqbbkx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2408
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kdpqbbkx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1972
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:3152
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3716 -s 1236
  2⤵
  - Program crash
  PID:1532

C:\Windows\SysWOW64\kdpqbbkx\iajrobnh.exe
C:\Windows\SysWOW64\kdpqbbkx\iajrobnh.exe /d"C:\Users\Admin\AppData\Local\Temp\a2f26ac6d777b4fe2c91e979c4fa9aa8_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1828
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1828 -s 536
  2⤵
  - Program crash
  PID:3604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3716 -ip 3716
1⤵
PID:920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1828 -ip 1828
1⤵
PID:2812

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\iajrobnh.exe

Filesize
12.7MB

MD5
2974dc177d3518a46bc0e6c00992ed7d

SHA1
d29390addc45f9453b52c75067f0044b0c9438f5

SHA256
c098d80f5cf50a04d5942363641cba50667b283172df0bec644d79eb62d38baf

SHA512
934abac4d59561b73785ae7bc3de6e2fa668424195609186931603ec792f90aae60f8480b24f02703e117d1f628387791cac86d2e85f8f9a33dab7554d56d904

Download Submit
memory/1828-15-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

Download
memory/3200-11-0x0000000000810000-0x0000000000825000-memory.dmp

Filesize
84KB

Download
memory/3200-13-0x0000000000810000-0x0000000000825000-memory.dmp

Filesize
84KB

Download
memory/3200-14-0x0000000000810000-0x0000000000825000-memory.dmp

Filesize
84KB

Download
memory/3716-1-0x0000000002F30000-0x0000000003030000-memory.dmp

Filesize
1024KB

Download
memory/3716-2-0x0000000002E00000-0x0000000002E13000-memory.dmp

Filesize
76KB

Download
memory/3716-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3716-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3716-9-0x0000000002E00000-0x0000000002E13000-memory.dmp

Filesize
76KB

Download
memory/3716-8-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads